EP2030887A1 - A bicycle wheel assembly drive and a driving method. - Google Patents

A bicycle wheel assembly drive and a driving method. Download PDF

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Publication number
EP2030887A1
EP2030887A1 EP08013709A EP08013709A EP2030887A1 EP 2030887 A1 EP2030887 A1 EP 2030887A1 EP 08013709 A EP08013709 A EP 08013709A EP 08013709 A EP08013709 A EP 08013709A EP 2030887 A1 EP2030887 A1 EP 2030887A1
Authority
EP
European Patent Office
Prior art keywords
wheel
rack
driving
wheel assembly
bike
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08013709A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hai Feng Zhao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHAO, HAI FENG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2030887A1 publication Critical patent/EP2030887A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/18—Rider propulsion of wheeled vehicles by movement of rider's saddle

Definitions

  • This invention relates to a driving technology of wheel assembly, especially a driving method of wheel assembly and a bike driven by the method.
  • FIG. 1 Pedal Force Analysis Schematic Drawing.
  • I indicates the pedal
  • 2 indicates the crank arm
  • 3 indicates the chain wheel
  • the angle between the radius and the vertical line in pedal's circular motion is ⁇ .
  • the pedal 1 receives a downward force F made by a human leg, and the F is decomposed into a tangential force F 1 along the tangent of the circle and a normal force F 2 along the normal of the circle and pointing to the axle center.
  • the tangential force F 1 forms the moment that drives the bike forward, while the normal force F 2 is wasted because no moment can be formed since it points to the axle center.
  • the leg force applies work
  • the tangential force F 1 drives the bike forward
  • the phase from ⁇ to 2 ⁇ is a return stroke, in which the leg force applies no work.
  • the bike is driven forward by the tangential force F 1 .
  • leg force F forms the moment that drives the wheel assembly forward, while the rest 36.3% is wasted.
  • the invention intends to provide a wheel assembly driving method and a bike that adopts this driving method. It mainly solves defects in existing ' technologies and is characterized by advantages of labor-saving ride and quick movement.
  • a wheel assembly driving method (the wheel assembly includes a driving wheel with a ratchet wheel) is characterized in that a rack of rectilinear motion drives the ratchet wheel, and the ratchet wheel further drives the wheel assembly.
  • the ratchet wheel has the same structure as the ratchet wheel mounted on the rear axle of traditional bikes. (The ratchet wheel is also called “freewheel”. Since it is a commonly known component, its principle and internal structure are not described here.)
  • the wheel assembly driving method is characterized in that the rack is engaged at the ratchet wheel side and moves linearly in tangent direction at the engagement joint
  • the ratchet wheel rotates in the same direction of that of traditional bikes. That is, when the rack is engaged at the left side of the ratchet wheel, the rack moves downwards to drive the rotation of the wheel and push it forward, while the rack moves upwards, it does not influence the normal movement of the wheel.
  • the wheel assembly driving method is characterized in that the rack is connected with a pedal.
  • the wheel assembly driving method is characterised in that the rectilinear motion direction of the rack is perpendicular to the ground.
  • a bike that is characterized in that its driving wheel adopts the driving method above.
  • the bike is characterized in that it consists of a frame, two handlebars, a front wheel, a rear wheel, a rear wheel fork and a seat.
  • a set of rack driving device is mounted in the inner side of left and right arm of the rear wheel fork respectively.
  • the rack driving device includes a rack in a metal pipe that can be moved vertically inside a metal pipe, a ratchet wheel mounted on the rear wheel and two pedals connecting the rack; an arc opening is provided at the joint of the metal pipe and the ratchet wheel so that the rack inside the metal pipe engages with the ratchet wheel.
  • the bike is characterized in that a long opening is made on the outer side of the lower part of the metal pipe, so that the pedals can move downwards.
  • the bike is characterized in that the pedals are reset via a pedal reset device.
  • the pedal reset device has three structures: the first structure is that the metal pipe is equipped with a spring; the upper end of the spring is fixed at the top of the metal pipe and the lower end is connected to the upper end of the rack; the second structure is that the upper end of the left and right rack are connected through a steel wire; the third structure is that shoes that can be buckled with the pedals is used to reset the pedals.
  • the pedals can also be mounted at lower end of the rack.
  • the human leg steps the pedal downward, the pedal drives the rotation of the ratchet wheel via the rack and then rotation of the wheels, so as to drive the wheel assembly forward.
  • FIG. 2 shows the figure shows the method of rack in rectilinear motion driving the wheel assembly.
  • I indicates the pedal
  • 4 indicates the rack
  • 5 indicates the ratchet wheel
  • 6 indicates wheels.
  • the ratchet wheel 5 has the same structure as the ratchet wheel mounted on the rear axle of traditional bikes, and the ratchet wheel 5 rotates in the same direction of that of traditional bikes. That is, when the rack 4 is engaged at the left side of the ratchet wheel 5, the rack 4 moves downwards to drive the rotation of the wheel and push it forward, while the rack 4 moves upwards, the ratchet wheel 5 does not influence the normal movement of the wheel 6.
  • the rack 4 is installed vertically to the ground; the pedal 1 is mounted on the upper end of the rack 4, and the rack 4 is engaged at left side of the ratchet wheel 5.
  • the human leg force is applied on the pedal 1 to make it move downwards; 100% of the human leg force is converted to a moment driving the wheel forward along the tangent direction of the ratchet wheel 5 via the rack 4.
  • the pedals 1 can also be mounted at lower end of the rack 4.
  • the human leg steps the pedal 1 downward, the pedal 1 drives the rotation of the ratchet wheel 4 via the rack 4 and then rotation of the wheels 6, so as to drive the wheel assembly forward.
  • FIG 3 it is a schematic drawing of a rack driving bike.
  • 7 indicates handlebars
  • 8 indicates the seat
  • 9 indicates the left arm of the rear wheel fork
  • 6 indicates the rear wheel
  • I indicates the pedal
  • 10 indicates the rack driving device
  • 11 indicates the front wheel.
  • Figure 4 is a schematic drawing of the rack driving device 10 in the inner side of the left arm.
  • 12 indicates the metal pipe
  • 13 indicates the spring
  • 4 indicates the rack
  • 5 indicates the ratchet wheel
  • 1 indicates the pedal.
  • An arc opening is provided at the joint of the metal pipe 12 and the ratchet wheel 5 so that the rack 4 inside the metal pipe 12 engages with the ratchet wheel 5.
  • FIG. 5 is an A-A section plan of the metal pipe 12 and rack 4.
  • 14 is the section of the metal pipe 12
  • 15 Is the section of the rack 4
  • 16 is the teeth of the rack 4.
  • the rack 4 and spring 13 are included in the metal tube 12 of the rack driving device 10, and the ratchet wheel 5 is blocked by the rear wheel fork 9, so they can not be shown in Figure 3.
  • Figure 3 and Figure 4 should be used in combination while looking at the rack driving bike.
  • the rack 4 in the rack driving device 10 drives the ratchet wheel 5, and the ratchet wheel 5 drives the rear wheel 6 to move the bike forward.
  • the reset device of this invention also has two forms as follows:
  • the steel wire connects to the upper end of the left rack and the right rack.
  • the steel wire drives the right pedal upwards; when the right pedal moves downwards, the steel wire drives the left pedal upwards.
  • the pedal reset device can also be a shoe that can be buckled with the pedal, which takes the pedal to its original position when the leg rises.
  • the rack driving bike In normal riding condition (medium speed), the rack driving bike can reach quicker speed than traditional bikes under the same force used; while moving forward at the same speed, the rack driving bike is more labor saving than traditional bikes.
  • the rack driving bikes also has another two characters that traditional bikes do not have: 1) for a traditional bike, the rider can only apply force with left and right leg alternatively; for a rack driving bike, the rider can apply force with left and right leg at the same time to reach an extraordinary quick speed; 2) when moving ahead at low speed, for a traditional bike, the rider' s left and right leg has to maintain circular movement with perimeter of 2 ⁇ R (R is the distance from the pedal to the center of chain wheel axis, i.e. crank arm length); for a rack driving bike, the rider can maintain the bike's speed with very small movement of the left and right leg.
  • R is the distance from the pedal to the center of chain wheel axis, i.e. crank arm length

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Transmission Devices (AREA)
EP08013709A 2007-07-31 2008-07-31 A bicycle wheel assembly drive and a driving method. Withdrawn EP2030887A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200710044389XA CN101100214B (zh) 2007-07-31 2007-07-31 一种自行车

Publications (1)

Publication Number Publication Date
EP2030887A1 true EP2030887A1 (en) 2009-03-04

Family

ID=39034716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08013709A Withdrawn EP2030887A1 (en) 2007-07-31 2008-07-31 A bicycle wheel assembly drive and a driving method.

Country Status (2)

Country Link
EP (1) EP2030887A1 (zh)
CN (1) CN101100214B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017024415A1 (en) * 2015-08-09 2017-02-16 Man Li Vehicle propelled by rack and pinion drive system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101234657B (zh) * 2008-02-29 2010-10-06 侯又村 脚踏驱动行走装置
CN101391639A (zh) * 2008-11-05 2009-03-25 上海高智机器人新技术合作公司 一种2轮驱动躺式自行车
CN101450698B (zh) * 2008-12-17 2011-03-30 上海高智机器人新技术合作公司 一种2轮驱动自行车
CN103640663B (zh) * 2012-12-06 2017-09-05 摩尔动力(北京)技术股份有限公司 行走动力车辆

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10485C (de) * J. KALBHENN in Cöthen Treibmechanismus für Velocipede
DE103351C (zh) *
DE34432C (de) * H. I BAINES in Toronto, Grafschaft York, Canada; i Neuerung an Velocipeden
FR534977A (fr) * 1921-03-31 1922-04-06 Voiturette mécanique à changement de vitesse et débrayage automatique
US1597639A (en) * 1926-02-09 1926-08-24 Glahn Elmer C Von Power scooter
CH208116A (de) * 1938-10-24 1939-12-31 Stucki Heinrich Antriebseinrichtung für Fahrräder.
CH221788A (fr) * 1942-02-11 1942-06-15 Jeannet Henri Dispositif de propulsion sans chaîne continue d'un cycle.
DE811196C (de) * 1949-08-23 1951-08-16 Fritz Moster Tretroller
US2831703A (en) * 1955-03-18 1958-04-22 Edwin H Shrimpton Pedal driven vehicle
US3414293A (en) * 1967-04-24 1968-12-03 Kenneth W. Frye Bicycle gear
US3415540A (en) * 1966-11-10 1968-12-10 Ring Sidney B Occupant-propelled play vehicle

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10485C (de) * J. KALBHENN in Cöthen Treibmechanismus für Velocipede
DE103351C (zh) *
DE34432C (de) * H. I BAINES in Toronto, Grafschaft York, Canada; i Neuerung an Velocipeden
FR534977A (fr) * 1921-03-31 1922-04-06 Voiturette mécanique à changement de vitesse et débrayage automatique
US1597639A (en) * 1926-02-09 1926-08-24 Glahn Elmer C Von Power scooter
CH208116A (de) * 1938-10-24 1939-12-31 Stucki Heinrich Antriebseinrichtung für Fahrräder.
CH221788A (fr) * 1942-02-11 1942-06-15 Jeannet Henri Dispositif de propulsion sans chaîne continue d'un cycle.
DE811196C (de) * 1949-08-23 1951-08-16 Fritz Moster Tretroller
US2831703A (en) * 1955-03-18 1958-04-22 Edwin H Shrimpton Pedal driven vehicle
US3415540A (en) * 1966-11-10 1968-12-10 Ring Sidney B Occupant-propelled play vehicle
US3414293A (en) * 1967-04-24 1968-12-03 Kenneth W. Frye Bicycle gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017024415A1 (en) * 2015-08-09 2017-02-16 Man Li Vehicle propelled by rack and pinion drive system

Also Published As

Publication number Publication date
CN101100214A (zh) 2008-01-09
CN101100214B (zh) 2010-10-06

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